Non-Linear Distortion-1 MCQ’s

Electronics & Communication Engineering RF & Microwave Circuit Design

This set of RF & Microwave Circuit Design Multiple Choice Questions & Answers (MCQs) focuses on “Non-Linear Distortion-1″.

1. The ________property of devices like diodes and transistors is responsible for their usage in amplifiers and frequency convertors.
a) Symmetry
b) Non linearity
c) Linearity
d) None of the mentioned

2. The output response of a non-linear circuit is given by the expression:
a) V0=a0+a1Vi1+a2Vi2+a3Vi3
b) 0=a0+a1Vi1
c) V0=a2Vi2+a3Vi3
d) V0=a0

3. Active devices like diodes and transistors become non-linear at high power levels due to:
a) Instability of transistor
b) Thermal noise
c) Gain compression
d) None of the mentioned

4. As the degree of non-linearity of a transistor or a diode increases, the power gain of the device:
a) Increases
b) Decreases
c) Remains a constant
d) None of the mentioned

5. 1 dB compression point is defined as the power level for which the output power of the non-linear device is 1 dB
a) True
b) False

6. When the input frequency consists of more than one closely spaced frequency, it results in:
a) Intermodal distortion
b) Gain compression
c) Signal fading
d) Signal attenuation

7. The fall in gain of a device due to non-linearities is called:
a) Gain compression
b) Gain saturation
c) Impedance mismatch
d) None of the mentioned

8. In a non-linear device, for a single input frequency the output will consist of:
a) Single frequency component
b) Harmonics of the input frequency
c) Constant gain
d) None of the mentioned

9. Third-order intercept point is defined as the point at which the gain of a non linear device is 3 dB less than the maximum gain.
a) True
b) False

10. The relation between an intercept points referenced at the input versus the output is given by the relation:
a) OIP3=G (IIP3)
b) (IIP3) = G (OIP3)
c) OIP3=G (IIP3)2
d) None of the mentioned

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